福建中立恒自动化设备有限公司
一、摘要 PLC是一种专门在工业环境下应用而设计的数字运算操作的电子装置。
它采用可以编制程序的存储器，用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令，并能通过数字式或模拟式的输入和输出，控制各种类型的机械或生产过程。PLC及其有关的外围设备都应按照易于与工业控制系统形成一个整体，易于扩展其功能的原则而设计。在工业生产的各个领域，机械加工企业为了提高生产效率，采用机械化流水作业的方式，对不同类型的零件分别组成的自动生产线。随着产品机型的更新换代，生产线承担的加工对象也随之改变，这就需要改变控制程序，使生产线的机械设备按新的工艺过程运行，而继电接触器控制器系统是采用固定接线，很难适应这个要求。大型自动生产线的控制系统使用的继电器数量很多，随着PLC的应用日益普及,其使用方法简单,便于掌握,且可靠性,抗干扰性很强,自身具有完善的功能.模块化的结构,使其在工业生产线上的应用越来越广泛。
发展趋势：1.向高速度、大容量方向发展
为了提高PLC的处理能力，要求PLC具有的响应速度和更大的存储容量。目前，有的PLC的扫描速度可达0.1ms/k步左右。PLC的扫描速度已成为很重要的一个性能指标。
在存储容量方面，有的PLC可达几十兆字节。为了扩大存储容量，有的公司已使用了磁泡存储器或硬盘。
2.向超大型、超小型两个方向发展
当前中小型PLC比较多，为了适应市场的多种需要，今后PLC要向多品种方向发展，特别是向超大型和超小型两个方向发展。现已有I/O点数达14336点的超大型PLC，其使用32位微处理器，多CPU并行工作和大容量存储器，功能强。
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17110141 /ELECTD EXTRACTN GSD200 /AXCELIS TECHNOLOGIES
0150-20160 / CABLE ASSEMBLY EMO INTERCONNECT / APPLIED MATERIALS AMAT
839-140126-301 / BAF EXELAN MDL TPL SET SI LOWER / LAM RESEARCH CORPORATION
244190-001 () / PCB, INDEXER BOARD, TFELGE0850 / ELECTROGLAS
20F8586() / MX383,LLCC GRAD GATE 3 MUFFIN FAN ASSMY / COMAIR
ELD-0018 / ELDIM APPLIED TECHNOLOGIES COLLIMATOR 2:1 / ZZ
01-55014 / ELD 0019 CHEMETAL INC. COLLIMATOR 1.75:1 / ZZ
853-083744-020 / ASSY LIFT WINDOW LCLP 20-IN / LAM RESEARCH
040M16A (ASSY) /BLOCK MANIF ASSY W 8 A040E1-34W /KOGANEI
218131 / PWB ASSY 8088 CPU VER 2 / AXCELIS TECHNOLOGIES
1706687(LOT OF DM S / PLATE, GRAPHITE, STRIKE PLATE / AXCELIS
5044-000282-11 / PCB LEAD BOARD DI80D064 DN, BUFFER BOARD 80/64, MEIDEN / TEL
710-609108-001 / STEPPER CONTROLLER / KLA TENCOR
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4S017-687 / NIKON LIB-IF PCB / NIKON S204 WAFER STEPPER
6739804 / CRIZ D0 PCB BOARD / MERLIN GERIN
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849-510239-600 / KIT MAINT QTR / LAM RESEARCH
515-540061-008 / FIXTER, ALIGN, WFR XPRT, 8" / LAM RESEARCH
0342-1449-0001 / MAGNET LNR ASSY OUTER RADIUS / AXCELIS TECHNOLOGIES
0150-76757 / C/A, DOME PNEUMATICS 60' / APPLIED MATERIALS AMAT
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600400-01 / TRACK INTERFACE PDB BD, 80072E / SVG
81710-04225-020 130422550 / PCB PNEUMATIC CONTROL / PLASMA-THERM
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9620-0586 / HTR2.0,STR6.81,SPEC,1BP3(SSV) / MKS
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0020-04164 /COUPLER ASSY /APPLIED MATERIALS AMAT
154-00250 / CHEMICAL FLOW METER 35-0005-014 / FUTURESTAR
1270-01608 /SW PRESS DIFF 2-12MM H20 SPDT MANOSTAR-TYPE/ APPLIED MATERIALS AMAT
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01-17434-400 / PCB,COAT TC2 WORKCELL TO COMPUTER 01-30784-804 /TEXAS INSTRUMENTS
0040-04221 /LID,LEXAN,SLIT LINER DOOR /APPLIED MATERIALS AMAT
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UFC-1660 (CLDM S(100SCCM) () / MFC,100 SCCM,GAS CL2 / IT
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PSF100A (LOT OF DM S /PSF 100A PRESSURE SENSOR /WORLD MAGNETICS
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1396-020 / STEPPING MOTOR DRIVE DIGIPLAN AM5 / PARKER
AC1793 / E.P.D.1 END POINT DETECTOR MODULE / STS
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3386-011248-11 / HARNESS, DC PWR BCU (RF) P-12XL / TOKYO ELECTRON TEL
3386-011249-11/ HARNESS, DC PWR (RF) P-12XL / TOKYO ELECTRON TEL
650-267 / BIRD WATT METER 4421 ACCESSORIES KIT / BIRD
WGFG06WR1 / 1/4" GASKET SEAL INLINE GAS FILTER / MYKROLIS
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GM8714F658 / MOTOR 112-098 / PITTMAN
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100-062 / 2ND IO PCB / CYBERNETICS CORP
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GESS-011 /FM-0012-2, SOLENOID BOARD /DNS DAI NIPPON SCREEN
640A-23510 /MKS INSTRUMENTS TYPE 640 1000TORR / MKS
715-028626-001 () / 6" UPPER BAFFLE PLATE / LAM RESEARCH
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2506564-21 / PCB, PROCESSOR, DPC / ASML
121-141 / TRANSDUCER,FLOW VELOCITY / SVG
102807-000 / PC FANOUT CARD / MICRO CONTROL COMPANY
196-FTB /ALLEN-BRADLEY PNEUMATIC TIMING IT DELAY /ALLEN-BRADLEY
DM S196-FTB /ALLEN-BRADLEY PNEUMATIC TIMING IT DELAY /ALLEN-BRADLEY
1181-000434-15 / PCB, TEL-ALPHA 8S BOARD MC-31108A /TOKYO ELECTRON TEL
8135240G002 / ON-BOARD SPLTR BX@COMP / CTI CRYOGENICS
118900-001 / MUX COMPUTER INTERFACE PCB ASSLY-MULTI-PLEXER / THERMCO
SECU-106AA / B-CPU BOARD S2-907076-01 2-VC-04419 / DNS DAI NIPPON SCREEN
1213530 /PS MOD RAX 12 8.3 208 VAC JMPR /AXCELIS TECHNOLOGIES
198-801-544 / MINIFLOW SENSOR FG 02-4 PVDF / GEORG FISCHER GF
SGDM-A3BDA / AC SERVOPAK POSITIONING ALIGNMENT R10007-417-1 / YASKAWA ELECTRIC
810-017023-001 / PCB-STEPPER MOTOR DRIVE EXTENDER BD / LAM RESEARCH
0240-60039 / SUSCEPTOR,PLATE ,6",AMT 0240-60039,S33-796A / AMAT
EW50RAGU-3P030B /FUJI CIRCUIT BREAKER HYDRAULIC MAGNETIC 3POLE 30A 440VAC SU4M60
15-151335-00 / LVR SCRN ROD HDP 300 LOUVERED / NOVELLUS
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